Welcome dialog fails to show up next time when it has been closed by the x button in its top right corner
#### Summary:
For some reason, the welcome dialog option seems to disable itself after the x button to close it has been clicked.
Also when enabled, it's not certain the dialog will show up.
#### Steps to reproduce:
- open Inkscape
- click x on the welcome dialog
- close Inkscape
- open Inkscape
#### What happened?
- the first time with new preferences, the welcome dialog shows up
- after I once click on the x button to close it, the dialog never shows up again
- the option is now disabled in the preferences
#### What should have happened?
The Welcome dialog should show up every time as long as I don't disable it.
In my custom build, it doesn't even show up *while the option is enabled*.
#### Version info
```
Inkscape 1.2 (fc4e4096c5, 2022-05-31)
GLib version: 2.64.6
GTK version: 3.24.20
glibmm version: 2.64.2
gtkmm version: 3.24.2
libxml2 version: 2.9.10
libxslt version: 1.1.34
Cairo version: 1.16.0
Pango version: 1.44.7
HarfBuzz version: 2.6.4
OS version: Linux Mint 20.3
```
issue